Calibrated Relocations for the TXAR Catalog (2009–2016)

This dataset contains the relocated earthquake catalog for the Southern Delaware Basin, as described in the published research paper titled "Insights into Temporal Evolution of Induced Earthquakes in the Southern Delaware Basin Using Calibrated Relocations from the TXAR Catalog (2009–2016)".

The earthquake relocation was performed using Hypocentroidal Decomposition technique, which provided improved spatial resolution for 73 events of magnitude 1.5 or greater in the TXAR catalog. The virtual hypocentroid used for relocating the TXAR catalog events was inverted from a core cluster of 116 post-2020 events recorded by the Texas Seismological Network. This relocated catalog includes key hypocentral parameters for each event—latitude, longitude, and depth—along with origin time and associated uncertainty estimates.

This dataset serves as a critical resource for understanding the temporal and spatial patterns of induced seismicity related to anthropogenic activities, such as shallow fluid injection, in the Southern Delaware Basin before the operation of local seismic networks in the region. It is well-suited for use in further seismic hazard assessments, modeling studies, and comparisons with other induced seismicity datasets.

Citation:

Asiye Aziz Zanjani, Heather R. DeShon, Vamshi Karanam, Alexandros Savvaidis; Insights into Temporal Evolution of Induced Earthquakes in the Southern Delaware Basin Using Calibrated Relocations from the TXAR Catalog (2009–2016). The Seismic Record, 2024; 4(2): 140–150. DOI: https://doi.org/10.1785/0320240011